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>Chapter 3. Overview of a Linux System</A
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><B
>Table of Contents</B
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><DT
>3.1. <A
HREF="x94.html"
>Various parts of an operating system</A
></DT
><DT
>3.2. <A
HREF="x110.html"
>Important parts of the kernel</A
></DT
><DT
>3.3. <A
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>Major services in a UNIX system</A
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><DD
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>3.3.1. <A
HREF="x121.html#AEN124"
><B
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>init</B
></A
></DT
><DT
>3.3.2. <A
HREF="x121.html#AEN147"
>Logins from terminals</A
></DT
><DT
>3.3.3. <A
HREF="x121.html#AEN160"
>Syslog</A
></DT
><DT
>3.3.4. <A
HREF="x121.html#AEN165"
>Periodic command execution: <B
CLASS="COMMAND"
>cron</B
> and
<B
CLASS="COMMAND"
>at</B
></A
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><DT
>3.3.5. <A
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>Graphical user interface</A
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><DT
>3.3.6. <A
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>Networking</A
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><DT
>3.3.7. <A
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>Network logins</A
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><DT
>3.3.8. <A
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>Network file systems</A
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><DT
>3.3.9. <A
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>Mail</A
></DT
><DT
>3.3.10. <A
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>Printing</A
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><DT
>3.3.11. <A
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>The filesystem layout</A
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>"God saw everything that he
	had made, and saw that it was very good. "</SPAN
> --  Bible
	King James Version.  Genesis 1:31</P
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><P
>This chapter gives an overview of a Linux system.  First,
	the major services provided by the operating system are described.
	Then, the programs that implement these services are described
	with a considerable lack of detail.  The purpose of this chapter
	is to give an understanding of the system as a whole, so that
	each part is described in detail elsewhere.</P
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